21015087 is an odd 8-digits composite number following 21015086
and preceding 21015088 . In scientific notation, it is written as 2.1015087 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 13957440 positive integers (up to 21015087) that are relatively prime to 21015087.
21015087 has 8 divisors, whose sum is 28125360
The reverse of 21015087 is 78051012
Previous prime number is 269
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million fifteen thousand eighty-seven
Scientific notation
2.1015087 × 10^7
Engineering notation
2.1015087 × 10^6
Prime Factorization
3 × 269 × 26041
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21015087
Product of the distinct prime numbers
The prime factorization of 21015087 is 3 × 269 × 26041.
Since it has a total of 3 prime factors.
10 , 7 , 72 , 30 , 499 , 993 , 8909 , 6142 , 44724 , 15490 , 565327 , 792015 , 6639122 , 6974359 , 25138268 , 79992062 , 897553364 , 938366782 , 4911233873 , 196493722
n×2
42030174
n×3
63045261
n×4
84060348
n×5
105075435
n÷2
10507543.5
n÷3
7005029
n÷3
5253771.75
n÷5
4203017.4
n2
441633881617569
n3
9.2809744443409E+21
n4
1.950404853926E+29
n5
4.0987927690477E+36
2 √n
4584.2215260609
3 √n
275.95847148747
4 √n
67.706879458892
5 √n
29.14111994444
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21015086
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21015087 can be divided by 8 positive divisors.
The sum of these divisors (counting 21015087) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001010101000101111
3
Ternary
1110112200021120
4
Quaternary
1100022220233
5
Quinary
20334440322
6
Senary
2030232023
8
Octal
120125057
10
Decimal
21015087
12
Duodecimal
7055613
16
Hexadecimal
140aa2f
20
Vigesimal
6b6he7
36
Base36
cifcf
md5
29783500864e7210640fd74bd7527643
sha1
0d01ee6792d4c89a1a9672c8cec911d824402594
sha256
54823fa4c672505c0db2f8755fd7249768a8606620842deb31a16a979c675cc8
sha512
2a6cdcb0830b8f2368bc7cb6befecb9eae02ce9c7955d2f2c85ed315013383930efcef918fc5e91ed74eb986ccc8eb2fc41cb688e46bde6280dbb5eae8bc324c
ripemd-160
13a631ebc4911c9610fb00e8b862b8330cc195de
Diameter
42030174
Circumference
132041685.8675
Area
1.3874337580661E+15
Volume
3.8876054843328E+22
Surface area
5.5497350322644E+15
Circumference
132041685.8675
Perimeter
84060348
Area
441633881617569
Diagonal
29719821.049851
Surface area
2649803289705414
Volume
9.2809744443409E+21
Space diagonal
36399198.40948
Perimeter
63045261
Area
1.9123308032637E+14
Altitude
18199599.20474
Surface area
1.9123308032637E+14
Volume
1.0937733276021E+21
Height
9906607.0166168